Gaya APA
Balthasar, H, U, V. (1989).
Christian meditation. Transl.by M.T.Skerry. : Christlich meditieren. 1984 .
San Francisco:
Ignatius Press.
Gaya MLA
Balthasar, Hans, Urs, Von.
"Christian meditation. Transl.by M.T.Skerry. : Christlich meditieren. 1984 ".
San Francisco:
Ignatius Press,
1989.
Buku.